From: Shay Drory shayd@nvidia.com
commit 2a0a935fb64ee8af253b9c6133bb6702fb152ac2 upstream.
DEVX can issue a general command, which is not used by mlx5 driver. In case such command is failed, mlx5 is trying to collect the failure data, However, mlx5 doesn't create a storage for this command, since mlx5 doesn't use it. This lead to array-index-out-of-bounds error.
Fix it by checking whether the command is known before collecting the failure data.
Fixes: 34f46ae0d4b3 ("net/mlx5: Add command failures data to debugfs") Signed-off-by: Shay Drory shayd@nvidia.com Signed-off-by: Saeed Mahameed saeedm@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c @@ -1894,9 +1894,10 @@ static void mlx5_cmd_err_trace(struct ml static void cmd_status_log(struct mlx5_core_dev *dev, u16 opcode, u8 status, u32 syndrome, int err) { + const char *namep = mlx5_command_str(opcode); struct mlx5_cmd_stats *stats;
- if (!err) + if (!err || !(strcmp(namep, "unknown command opcode"))) return;
stats = &dev->cmd.stats[opcode];